SQLite3, time/mem transformations, small bugfixes
SQLite3, time/mem transformations, small bugfixes

Use SQLite3 as database
Transform time/memory parameters for some languages

France-ioi/taskgrader,France-ioi/taskgrader,France-ioi/taskgrader,France-ioi/taskgrader,France-ioi/taskgrader,France-ioi/taskgrader,France-ioi/taskgrader